My Cygnar army has a theme; lots of guns. So it was obvious that I would go with Caine as my primary 'caster. In his background, he is portrayed as the most shady and independent warcaster in the kingdom, which suits me fine. After a few games with the Lt. it was hard to use any other Cygnar 'caster, he is pretty solid. I'm looking forward to picking up his epic version, just for gunfighter if nothing else.
I would like to see a live-action Warmachine movie, and I think the talented Bruce would be an obvious choice for Caine.